Two men died in a shooting late Tuesday night in the parking lot outside New Orleans event space Mardi Gras World, where a rap concert was held. A third man was wounded in gunfire inside the venue where Atlanta rapper Rich Homie Quan performed.

Police said the two shootings, which occurred more than an hour apart, were unrelated.

Around 11:15 p.m., a man's body lay in the parking lot of the riverfront parade float den and event space at 1380 Port of New Orleans. Another man's body was found in a silver car nearby.

A crowd gathered and onlookers sobbed as authorities arrived on the scene of Mardi Gras World. A man outside of the crime scene sat slumped against a wall of the nearby Ernest N. Morial Convention Center crying "They took my baby, they took my son."

One of the men killed was Deron Hitchens, 25, according to his grandmother, Viola Galmon, who arrived at scene after she heard something happened at the concert her grandson attended.

"He wasn't the kind of person to get into this fussing and fighting," Galmon said.

The other man was 28. His name was not immediately available.

Police said both men were struck several times, and bullets hit several unoccupied vehicles. Investigators found one handgun and bullet casings at the scene.

"This investigation is very preliminary and investigators are currently in the process of gathering evidence and information to identify the person(s) responsible in this incident, as well as a motive," Officer Frank Robertson, a spokesman for NOPD, said in a statement early Wednesday.

Mardi Gras World served as the venue for a concert Rich Homie Quan, which was scheduled to begin at 7 p.m. It is unknown what time the show ended. And Robertson said he didn't know if the gunfire interrupted the show.

At 10 p.m., a gunman opened fire inside the banquet hall, striking a 25-year-old man in the shoulder. He was taken to an area hospital for treatment and spoke to detectives there.

Police have provided no suspect information.

The shootings came in the last minutes of Carnival, which ended at midnight with city officials walking down Bourbon Street to mark the end of the revelry. In addressing the press, NOPD Superintendent Ronal Serpas said preliminary information indicated the double shooting that killed the two men was not random.

Before the violence at Mardi Gras World, there had been no other fatal shootings on Fat Tuesday.

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Reporting contributed by Michael DeMocker and Jacob Bielanski.

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UPDATE: An earlier version of this report included an incorrect suspect description provided by police who mistakenly described one of the shooting victims, not a shooter at large, NOPD said Wednesday at 1:45 p.m.